Forest Practices

In article <335C12FE.654A at worldnet.att.net>,
Coddington at worldnet.att.net wrote:
>> Larry Caldwell wrote:
> I've
> > planted the understory with doug fir, but it will be 20 years before the
> > fir is adequately established to take over the job of soil nailing the
> > dirt to the hillside.
>> Larry, one thing a forester might have told you is that underplanting
> Douglas Fir would probably not be the most effective way to regenerate
> your stand, since they require full sunlight for growth.
I've heard this thesis before, and would like the citation for this
information. I have found Douglas fir reseeding itself and germinating
well under near full- canopy conditions in Multnomah, Clackamas and Linn
counties of Oregon. Before the data take on a life of its own, where did
it come from?
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